I couldn't do it. When we switch to cloth with our first we did a whole spreadsheet to determine what we were currently spending. I don't remember the dollar amounts but at a year old we were going through 7-9 diapers a day plus a special overnight diaper because he was such a heavy wetter. Then of course around 3 packs of wipes. We only used Huggies Supreme and Huggies Overnights as that was what worked best for us. I do remember the case from Costco was around $37.00 and it did not last the whole month. Then of course you have to remember that as the baby gets older there are fewer diapers in each box. So still paying the same amount for less diapers.